Gaff hook



FIG. 1 is a rear perspective of a gaff hook of our new design illustrated on an end of a pole;

FIG. 2 is a front perspective of the gaff hook;

FIG. 3 is a left elevation of the gaff hook;

FIG. 4 is a front elevation of the gaff hook;

FIG. 5 is a right elevation of the gaff hook;

FIG. 6 is a rear elevation of the gaff hook;

FIG. 7 is a top view of the gaff hook; and,

FIG. 8 is a bottom view of the gaff hook.

The broken lines in FIGS. 1-8 are directed to environment and form no part of the claimed design. 

CLAIM The ornamental design for a gaff hook, as shown and described. 